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TLS Online TPP Program

#Question id: 3766

Individuals with the disorder xeroderma pigmentosum are hypersensitive to sunlight, and mutations to the DNA in their skin cells are left uncorrected. Why are the mutations not corrected in individuals with this disorder?

#Section 3: Genetics, Cellular and Molecular Biology

  1. The disorder makes cells unable to replicate DNA.

  2. The disorder causes mitosis to stop during metaphase.

  3. The disorder makes cells unable to form chromosomes.

  4. The disorder causes cells to be unable to repair thymine dimers.

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TLS Online TPP Program

#Question id: 3706

#Section 3: Genetics, Cellular and Molecular Biology

During the elongation stage of DNA replication
TLS Online TPP Program

#Question id: 3707

#Section 3: Genetics, Cellular and Molecular Biology

The replication of DNA is ________ because ________.
TLS Online TPP Program

#Question id: 3708

#Section 3: Genetics, Cellular and Molecular Biology

The incorporation of new nucleotides into a growing strand of DNA occurs during ________.
TLS Online TPP Program

#Question id: 3710

#Section 3: Genetics, Cellular and Molecular Biology

The protein machine that carries out DNA replication is called ________.
TLS Online TPP Program

#Question id: 3712

#Section 3: Genetics, Cellular and Molecular Biology

Approximately ________ base pairs are added per second during DNA in vivo replication in E.coli.
TLS Online TPP Program

#Question id: 3713

#Section 3: Genetics, Cellular and Molecular Biology

At the normal rate of replication, about how many minutes does it take for the entire E. coli chromosome (4.6 × 10^3 kbp) to be duplicated?